diff options
author | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 15:34:58 -0500 |
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committer | Steven Whitehouse <swhiteho@redhat.com> | 2006-03-31 15:34:58 -0500 |
commit | 86579dd06deecfa6ac88d5e84e4d63c397cd6f6d (patch) | |
tree | b4475d3ccde53015ad84a06e4e55e64591171b75 /arch/powerpc/math-emu/mcrfs.c | |
parent | 7ea9ea832212c4a755650f7c7cc1ff0b63292a41 (diff) | |
parent | a0f067802576d4eb4c65d40b8ee7d6ea3c81dd61 (diff) |
Merge branch 'master'
Diffstat (limited to 'arch/powerpc/math-emu/mcrfs.c')
-rw-r--r-- | arch/powerpc/math-emu/mcrfs.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/powerpc/math-emu/mcrfs.c b/arch/powerpc/math-emu/mcrfs.c new file mode 100644 index 00000000000..106dd912914 --- /dev/null +++ b/arch/powerpc/math-emu/mcrfs.c @@ -0,0 +1,31 @@ +#include <linux/types.h> +#include <linux/errno.h> +#include <asm/uaccess.h> + +#include "soft-fp.h" + +int +mcrfs(u32 *ccr, u32 crfD, u32 crfS) +{ + u32 value, clear; + +#ifdef DEBUG + printk("%s: %p (%08x) %d %d\n", __FUNCTION__, ccr, *ccr, crfD, crfS); +#endif + + clear = 15 << ((7 - crfS) << 2); + if (!crfS) + clear = 0x90000000; + + value = (__FPU_FPSCR >> ((7 - crfS) << 2)) & 15; + __FPU_FPSCR &= ~(clear); + + *ccr &= ~(15 << ((7 - crfD) << 2)); + *ccr |= (value << ((7 - crfD) << 2)); + +#ifdef DEBUG + printk("CR: %08x\n", __FUNCTION__, *ccr); +#endif + + return 0; +} |